Method for Transmitting Control Information and Device for Same

1. A method for transmitting uplink control information by a user equipment in a TDD (Time Division Duplex) wireless communication system, the method comprising: determining, by the user equipment, a PUCCH (Physical Uplink Control Channel) transmission power parameter according to an UL-DL (Uplink-Downlink) configuration and a modulo equation; and transmitting, by the user equipment to a base station, a HARQ-ACK (Hybrid Automatic Repeat reQuest-Acknowledgement) signal via a PUCCH in an uplink (UL) subframe in accordance with the determined PUCCH transmission power parameter, wherein the modulo equation includes the following parameters; a number of cells configured for the user equipment; a downlink assignment index number indicated by a downlink scheduling-related PDCCH (Physical Downlink Control Channel) lastly detected within subframe(s) associated with the UL subframe; a total number of downlink scheduling-related PDCCHs detected; a number of HARQ-ACK bits corresponding to a configured downlink transmission mode on a serving cell c, and one of: a number of PDCCH or PDSCH (Physical Downlink Shared Channel) without a corresponding PDCCH received when bundling is applied, or a number of transport blocks or a SPS (Semi-Persistent Scheduling) release PDCCH received by the user equipment when bundling is not applied, wherein the modulo equation further includes applying a modulo-4 operation to a difference between the downlink assignment index number and the total number of downlink scheduling-related PDCCHs detected.

2. The method of claim 1 , wherein the UL subframe corresponds to a subframe n, wherein the PUCCH transmission power parameter is n HARQ , wherein the modulo equation is: n HARQ = ∑ c = 0 C - 1 ⁢ ( ( ( V DAI , c DL - U DAI , c ) ⁢ mod ⁢ ⁢ 4 ) · n c ACK + ∑ k ∈ K ⁢ N k , c received ) , wherein C denotes the number of cells configured for the user equipment, K denotes a set having M elements k (k∈K) according to the UL-DL configuration, M is a positive integer, V DAI,c DL is the downlink assignment index number having a value indicated by a 2-bit DAI (Downlihk Assignment Index) field included in the downlink scheduling-related PDCCH lastly detected within the subframe(s) n−k in the serving cell c, U DAI,c denotes the total number of downlink scheduling-related PDCCHs detected within the subframe(s) n−k in the serving cell c, n c ACK denotes the number of HARQ-ACK bits corresponding to the configured downlink transmission mode on the serving cell c, and is set to 1 when spatial bundling is applied, when spatial bundling is applied, N k,c received represents the number of PDCCH or PDSCH without a corresponding PDCCH received in the subframe(s) n−k and the serving cell c, when spatial bundling is not applied, N k,c received represents the number of transport blocks received or SPS release PDCCH received in the subframe(s) n−k and the serving cell c, and mod represents a modulo operation.

3. The method according to claim 2 , wherein a PUCCH transmission power is determined according to the following equation: h ⁡ ( · ) = n HARQ + n SR - 1 N , wherein N is a positive integer, and n SR is a power adjustment parameter used to adjust the PUCCH transmission power in relation to SR (Scheduling Request), and is set to 0 or 1.

4. The method according to claim 3 , wherein the PUCCH transmission power is determined according to the following equation: P PUCCH ⁡ ( n ) = min ⁢ { P CMAX , c ⁡ ( n ) , P 0 ⁢ _PUCCH + PL c + h ⁡ ( · ) + Δ F_PUCCH ⁡ ( F ) + Δ TxD ⁡ ( F ′ ) + g ⁡ ( i ) } , wherein P PUCCH (n) represents the PUCCH transmission power, P CMAX,c (n) represents a configured transmission power in the subframe n for the serving cell c, P 0 _ PUCCH is determined based on at least one parameter provided by a higher layer, PL c is a downlink path loss estimate of the serving cell c, Δ P _ PUCCH (F) represents a value corresponding to a PUCCH format, Δ TxD (F′) is a value provided by the higher layer or 0, and g(i) represents a current PUCCH power control adjustment state.

5. The method according to claim 1 , wherein the UL-DL configuration is one of UL-DL configurations #1 to #6 as shown in the following table Uplink-downlink Subframe number configuration 0 1 2 3 4 5 6 7 8 9 0 D S U U U D S U U U 1 D S U U D D S U U D 2 D S U D D D S U D D 3 D S U U U D D D D D 4 D S U U D D D D D D 5 D S U D D D D D D D 6 D S U U U D S U U D wherein D denotes a subframe for downlink, S denotes a subframe comprising a downlink period, a guard period, and an uplink period, and U denotes a subframe for uplink.

6. The method according to claim 5 , wherein the UL-DL configuration is UL-DL configuration #5.

7. A user equipment configured to transmit uplink control information in a TDD (Time Division Duplex) wireless communication system, the user equipment comprising: a processor configured to determine a PUCCH (Physical Uplink Control Channel) transmission power parameter according to an UL-DL (Uplink-Downlink) configuration and a modulo equation, wherein the modulo equation includes the following parameters: a number of cells configured for the user equipment; a downlink assignment index number indicated by a downlink scheduling-related PDCCH (Physical Downlink Control Channel) lastly detected within subframe(s) associated with an UL (Uplink) subframe; a total number of downlink scheduling-related PDCCHs detected; a number of HARQ-ACK (Hybrid Automatic Repeat reQuest-Acknowledgement) bits corresponding to a configured downlink transmission mode on a serving cell c, and one of: a number of PDCCH or PDSCH (Physical Downlink Shared Channel) without a corresponding PDCCH received when bundling is applied, or a number of transport blocks or a SPS (Semi-Persistent Scheduling) release PDCCH received by the user equipment when bundling is not applied, wherein the modulo equation further includes applying a modulo-4 operation to a difference between the downlink assignment index number and the total number of downlink scheduling-related PDCCHs detected; and a radio frequency (RF) unit operatively connected to the processor and configured to transmit a HARQ-ACK signal to a base station via a PUCCH in the UL subframe in accordance with the determined PUCCH transmission power parameter.

8. The user equipment of claim 7 , wherein the UL subframe corresponds to a subframe n, wherein the PUCCH transmission power parameter is n HARQ , wherein the modulo equation is: n HARQ = ∑ c = 0 C - 1 ⁢ ( ( ( V DAI , c DL - U DAI , c ) ⁢ mod ⁢ ⁢ 4 ) · n c ACK + ∑ k ∈ K ⁢ N k , c received ) , wherein C denotes the number of cells configured for the user equipment, K denotes a set having M elements k (k∈K) according to the UL-DL configuration, M is a positive integer, V DAI,c DL is the downlink assignment index number having a value indicated by a 2-bit DAI (Downlink Assignment Index) field included in the downlink scheduling-related PDCCH lastly detected within the subframe(s) n−k in the serving cell c, U DAI,c denotes the total number of downlink scheduling-related PDCCHs detected within the subframe(s) n−k in the serving cell c, n c ACK denotes the number of HARQ-ACK bits corresponding to the configured downlink transmission mode on the serving cell c, and is set to 1 when spatial bundling is applied, when spatial bundling is applied, N k,c received represents the number of PDCCH or PDSCH without a corresponding PDCCH received in the subframe(s) n−k and the serving cell c, when spatial bundling is not applied, N k,c received represents the number of transport blocks received or SPS release PDCCH received in the subframe(s) n−k and the serving cell c, and mod represents a modulo operation.

9. The user equipment according to claim 8 , wherein the PUCCH transmission power is determined according to the following equation: h ⁡ ( · ) = n HARQ + n SR - 1 N , wherein N is a positive integer, and n SR is a power adjustment parameter used to adjust the PUCCH transmission power in relation to SR (Scheduling Request), and is set to 0 or 1.

10. The user equipment according to claim 9 , wherein the PUCCH transmission power is determined according to the following equation: P PUCCH ⁡ ( n ) = min ⁢ { P CMAX , c ⁡ ( n ) , P 0 ⁢ _PUCCH + PL c + h ⁡ ( · ) + Δ F_PUCCH ⁡ ( F ) + Δ TxD ⁡ ( F ′ ) + g ⁡ ( i ) } , wherein P PUCCH (n) represents the PUCCH transmission power, P CMAX,c (n) represents a configured transmission power in the subframe n for the serving cell c, P 0 _ PUCCH is determined based on at least one parameter provided by a higher layer, PL c is a downlink path loss estimate of the serving cell c, Δ F _ PUCCH (F) represents a value corresponding to a PUCCH format, Δ TxD (F′) is a value provided by the higher layer or 0, and g(i) represents a current PUCCH power control adjustment state.

11. The user equipment according to claim 7 , wherein the UL-DL configuration is one of UL-DL configurations #1 to #6 as shown in the following table Uplink-downlink Subframe number configuration 0 1 2 3 4 5 6 7 8 9 0 D S U U U D S U U U 1 D S U U D D S U U D 2 D S U D D D S U D D 3 D S U U U D D D D D 4 D S U U D D D D D D 5 D S U D D D D D D D 6 D S U U U D S U U D wherein D denotes a subframe for downlink, S denotes a subframe comprising a downlink period, a guard period, and an uplink period, and U denotes a subframe for uplink.

12. The user equipment according to claim 11 , wherein the UL-DL configuration is UL-DL configuration #5.